NOT the trailer frame flex causing any of that. Just coincidence. On the cabinets, pretty easy repair, but something caused by a brain fart in craftsmanship (common), on the shower, I went and added additional supports to the unsecured thin plywood and 2x4 pieces under the shower base. Not uncommon either to see what you've mentioned, and a LOT more.
John and Rebecca Dickson
Emma-8 / Little John-5 / Iva-1+
2013 Ford F-350 Lariat FX4, CC LB PSD, DRW
2015 Jayco Jay Flight 28BHBE (#8)